can you tell us about that day? >> it was what is asked of us to do every day, but honestly, to tell the story about that day, hurts me. >> reporter: staff sergeant brett perry was near giunta when they were ambushed. >> i can't even begin to describe how intense it was. i could see the guys -- i could see their muzzle flashes. >> reporter: that is when sal giunta made his extraordinary move. seeing his best friend, platoon leader josh brennan was badly wounded and being dragged away by insurgent, giunta charged right into the ambush after them, under heavy fire. how often do you remember that time, that day? >> i think about it multiple times a day. i think about it every day. all the time. >> reporter: giunta pulled brennan to safety. >> he was putting everything he had to keeping brennan alive. he was talking to him, comforting him, saying, you know, you're -- all you got to do is survive. you're done. you're going to go home. all you have to do is pull through. >> reporter: but brennan did not make it. and amid